A Feast for Crows

Karl remains at Craster's Keep after the betrayal, along with a few other former members of the Night's Watch.[5]

A Dance With Dragons

Five surviving betrayers wander in the haunted forest, planning to head south over the Wall. However, the traitors are killed by Coldhands and his ravens. Summer, Bran Stark's direwolf, finds the bodies and eats parts of the meat. [6] It is unknown if Karl is among them.